China XD Plastics (CXDC) 10-Q 12 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 08, 2013
Document And Entity Information Abstract	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Entity Registrant Name	'China XD Plastics Co Ltd	'
Entity Central Index Key	'0001353970	'
Current Fiscal Year End Date	'--12-31	'
Document Fiscal Period Focus	'Q3	'
Document Fiscal Year Focus	'2013	'
Entity Filer Category	'Smaller Reporting Company	'
Entity Units Outstanding	'	47,868,772

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2013	Dec. 31, 2012
Current assets:	'	'
Cash and cash equivalents	$94,257,033	$83,822,602
Restricted cash	5,678,105	16,915,359
Time deposits	180,555,556	47,955,923
Accounts receivable, net	265,245,509	143,843,764
Amounts due from related parties	4,085	219,360
Inventories	119,131,396	78,263,071
Prepaid expenses and other current assets	5,137,641	6,090,232
Total current assets	670,009,325	377,110,311
Property, plant and equipment, net	215,669,167	223,780,133
Land use rights, net	10,547,002	10,524,451
Other non-current assets	3,046,692	169,414
Total assets	899,272,186	611,584,309
Current liabilities:	'	'
Short-term loans	260,253,268	162,076,050
Bills payable	8,169,935	15,810,340
Accounts payable	111,716,226	7,061,259
Amounts due to a related party	368,479	'
Income taxes payable	16,216,348	8,511,679
Accrued expenses and other current liabilities	35,218,647	34,442,983
Total current liabilities	431,942,903	227,902,311
Income tax payable-non current	1,532,691	'
Deferred income tax liabilities	19,737,237	20,733,959
Warrants liability	700,648	1,008,750
Total liabilities	453,913,479	249,645,020
Redeemable Series D convertible preferred stock	97,576,465	97,576,465
Stockholders' equity:	'	'
Series B preferred stock	100	100
Common stock, US$0.0001 par value, 500,000,000 shares authorized, 49,019,708 shares and 47,584,772 shares issued, 47,868,772 shares and 47,563,772 shares outstanding as of September 30, 2013 and December 31, 2012, respectively	4,789	4,758
Treasury stock, 21,000 shares at cost.	-92,694	-92,694
Additional paid-in capital	74,276,252	72,583,910
Retained earnings	253,527,526	177,208,492
Accumulated other comprehensive income	20,066,269	14,658,258
Total stockholders' equity	347,782,242	264,362,824
Commitments and contingencies	'	'
Total liabilities, redeemable convertible preferred stocks and stockholders' equity	$899,272,186	$611,584,309

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATED BALANCE SHEETS [Abstract]	'	'
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	49,019,708	47,584,772
Common stock, shares outstanding	47,868,772	47,563,772
Treasury shares, shares	21,000	21,000

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]	'	'	'	'
Revenues	$293,139,049	$163,368,820	$666,256,978	$431,208,409
Cost of revenues	-227,473,486	-123,326,182	-534,250,688	-324,676,853
Gross profit	65,665,563	40,042,638	132,006,290	106,531,556
Selling expenses	-143,573	-77,399	-253,565	-260,151
General and administrative expenses	-4,436,021	-2,961,496	-10,775,595	-7,597,292
Research and development expenses	-5,139,610	-5,471,242	-15,926,298	-12,536,739
Total operating expenses	-9,719,204	-8,510,137	-26,955,458	-20,394,182
Operating income	55,946,359	31,532,501	105,050,832	86,137,374
Interest income	1,702,488	1,406,161	4,242,205	3,826,177
Interest expense	-4,499,497	-1,156,056	-10,810,221	-2,555,099
Foreign currency exchange gains	550,010	726,389	1,916,626	9,126
Government grant	709,655	'	919,746	'
Change in fair value of warrants liability	-112,229	854,991	308,102	2,717,310
Change in fair value of embedded derivative liability	'	235	'	547
Total non-operating income (expense), net	-1,649,573	1,831,720	-3,423,542	3,998,061
Income before income taxes	54,296,786	33,364,221	101,627,290	90,135,435
Income tax expense	-13,235,220	-8,091,572	-25,308,256	-21,527,651
Net income	41,061,566	25,272,649	76,319,034	68,607,784
Earnings per common share:	'	'	'	'
Basic and diluted	$0.64	$0.40	$1.19	$1.08
Other comprehensive income	'	'	'	'
Foreign currency translation adjustment, net of nil income taxes	768,724	2,840,914	5,408,011	814,351
Comprehensive income	$41,830,290	$28,113,563	$81,727,045	$69,422,135

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net cash provided by (used in) operating activities	$60,137,200	($12,423,558)
Cash flows from investing activities:	'	'
Proceeds from maturity of time deposits	145,189,952	'
Purchase of time deposits	-275,929,213	-28,308,042
Purchases of property, plant and equipment and land use rights	-16,086,974	-72,155,807
Net cash used in investing activities	-146,826,235	-100,463,849
Cash flows from financing activities:	'	'
Proceeds from bank borrowings	324,695,542	111,408,621
Repayments of bank borrowings	-230,155,513	-77,879,405
Release of restricted cash	4,824,298	'
Placement of restricted cash as collateral for bank borrowings	-4,013,492	-4,733,643
Dividends paid to redeemable Series C convertible preferred stockholders	'	-60
Net cash provided by financing activities	95,350,835	28,795,513
Effect of foreign currency exchange rate changes on cash and cash equivalents	1,772,631	-360,531
Net increase (decrease) in cash and cash equivalents	10,434,431	-84,452,425
Cash and cash equivalents at beginning of period	83,822,602	135,482,386
Cash and cash equivalents at end of period	94,257,033	51,029,961
Supplemental disclosure of cash flow information:	'	'
Interest paid	8,316,403	2,084,010
Income taxes paid	$17,638,502	$19,978,772

Basis_of_presentation_signific

Basis of presentation, significant concentrations and risks	9 Months Ended
	Sep. 30, 2013
Basis Of Presentation Significant Concentrations And Risks [Abstract]	'
Basis of presentation, significant concentrations and risks	'
	Note 1 - Basis of presentation, significant concentrations and risks
	(a) Basis of presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by rules and regulations of the United States Securities and Exchange Commission. The condensed consolidated balance sheet as of December 31, 2012 was derived from the audited consolidated financial statements of China XD Plastics Company Limited ("China XD Plastics") and subsidiaries (collectively, the "Company"). The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated balance sheet of the Company as of December 31, 2012, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the year then ended, included in the Company's Annual Report on Form 10-K filed with the SEC on March 25, 2013.
	In the opinion of the management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the financial position as of September 30, 2013, the results of operations for the three-month and nine-month periods ended September 30, 2013 and 2012, and the cash flows for the nine-month periods ended September 30, 2013 and 2012, have been made.
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories and deferred income tax assets, the useful lives of property, plant and equipment, the collectibility of accounts receivable, the probability of the redemption of redeemable Series D convertible preferred stock, the fair values of financial instruments and stock-based compensation awards, and the accruals for tax uncertainties and other contingencies. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
	(b) Significant concentrations and risks
	Sales concentration
	The Company sells its products, substantially through approved distributors in the People's Republic of China (the "PRC").  The Company's sales are highly concentrated.  Sales to four major distributors, which individually exceeded 10% of the Company's revenues for the three-month and nine-month periods ended September 30, 2013 and 2012 (with the exception of one distributor in the three-month and nine-month periods ended September 30, 2012), are as follows:
		Three-Month Period Ended September 30,
		2013				2012
		US$		%		US$		%
	Distributor A		65,069,987		22.20%		15,961,659		9.8%
	Distributor B		56,245,919		19.20%		55,672,801		34.1%
	Distributor C		38,080,146		13.00%		24,313,075		14.90%
	Distributor D		35,631,930		12.20%		24,115,942		14.80%
	Total		195,027,982		66.6%		120,063,477		73.60%
		Nine-Month Period Ended September 30,
		2013				2012
		US$		%		US$		%
	Distributor A		170,707,884		25.60%		34,468,238		8.00%
	Distributor B		137,629,782		20.70%		143,676,477		33.30%
	Distributor C		90,659,257		13.60%		64,657,926		15.00%
	Distributor D		85,700,647		12.90%		63,549,286		14.70%
	Total		484,697,570		72.80%		306,351,927		71.00%
	The Company expects revenues from these distributors to continue to represent a substantial portion of its revenue in the future. Any factor adversely affecting the automobile industry in the PRC or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.
	Purchase concentration of Raw materials and Production Equipment
	The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. The Company purchases substantially all of its raw materials through three distributors.  Raw material purchases from these three suppliers, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 56.6% and 99.2% of the Company's total raw material purchases for the three-month periods ended September 30, 2013 and 2012, respectively, and 79.9% and 99.6% of the Company's total raw material purchase for the nine-month periods ended September 30, 2013 and 2012, respectively. Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.
	The Company has three production facilities, all of which are located in Harbin, Heilongjiang province of the PRC. The Company plans to construct a 300,000 metric ton plastics production project and affiliated R&D center and training center project in Yinghua Industrial Park, Shunqing District, Nanchong City, Sichuan Province (the "Construction of Sichuan Plant"), the fourth production base, in Sichuan province of the PRC. The Company purchased equipment from a major equipment distributor, which accounted for 93.1% and 99.9% of the Company's total equipment purchases for the three-month periods ended September 30, 2013 and 2012, respectively, and accounted for 78.5% and 99.8% of the Company's total equipment purchases for the nine-month periods ended September 30, 2013 and 2012, respectively. A change of the supplier could cause a delay in manufacturing and a possible loss of sales, which could adversely affect the Company's business, financial position and results of operations.  The majority owner of the equipment distributor is also the majority owner of a major raw material supplier that supplied approximately 12.8% and 20.8% of the Company's total raw material purchases for the three-month periods ended September 30, 2013 and 2012, and 16.0% and 23.9% of the Company's total raw material purchases for the nine-month periods ended September 30, 2013 and 2012, respectively.  In addition, the majority owner of the equipment distributor is also the majority owner of sales Distributor D presented above.
	Cash concentration
	Cash and cash equivalents, restricted cash and time deposits maintained at banks consist of the following:
		30-Sep-13		31-Dec-12
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC		279,774,799		140,788,222
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.		78,027		18,391
	Financial Institutions in the PRC		11		7,828,156
	Financial Institution in Hong Kong Special Administrative Region		485,969		11,287
	Euro denominated bank deposits with a financial institution in Hong Kong		151,433		-
	The bank deposits with financial institutions in the PRC are not insured by any government authority.  To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC with acceptable credit rating.
	Cash that is restricted as to withdrawal or usage is reported as restricted cash in the condensed consolidated balance sheets and is not included as cash and cash equivalents in the condensed consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for bills payable relating to purchase of raw materials are reported as restricted cash and amounted to US$1,633,987 and US$10,914,753 as of September 30, 2013 and December 31, 2012, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company. Short-term bank deposits that are pledged as collateral for letter of credit relating to purchase of raw materials are reported as restricted cash and amounted to nil and US$1,225,402 as of September 30, 2013 and December 31, 2012. The cash will be available for use by the Company after 60 days since the issuance of the letter of credit. The cash flows from the pledged bank deposits, which relate to purchases of raw materials, are reported within cash flows from operating activities in the condensed consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for short-term bank borrowings are reported as restricted cash and amounted to US$4,044,118 and US$4,775,204 as of September 30, 2013 and December 31, 2012, respectively. The cash flows from such bank deposits are reported within cash flows from financing activities in the condensed consolidated statements of cash flows.
	Time deposits represent certificates of deposit with an initial term of six months when purchased.  As of September 30, 2013 and December 31, 2012, the Company's time deposits bear a weighted average interest rate of 3.0% and 3.16% per annum, respectively.

Accounts_receivable

Accounts receivable	9 Months Ended
	Sep. 30, 2013
Accounts receivable [Abstract]	'
Accounts receivable	'
	Note 2 - Accounts receivable
	Accounts receivable consist of the following:
		30-Sep-13			31-Dec-12
		US$			US$
	Accounts receivable		265,391,325			143,991,818
	Allowance for doubtful accounts		(145,816	)		(148,054	)
	Accounts receivable, net		265,245,509			143,843,764
	As of September 30, 2013 and December 31, 2012, the accounts receivable balances also include notes receivable in the amount of US$4,843,854 and US$927,390, respectively.
	There was no accrual of additional provision or write-off of accounts receivable for the three-month and nine-month periods ended September 30, 2013 and 2012.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2013
Inventories [Abstract]	'
Inventories	'
	Note 3 - Inventories
	Inventories consist of the following:
		30-Sep-13		December 31, 2012
		US$		US$
	Raw materials		62,265,083		70,672,300
	Work in progress		286,167		110,964
	Finished goods		56,580,146		7,479,807
	Total inventories		119,131,396		78,263,071
	There were no write down of inventories for the three-month and nine-month periods ended September 30, 2013 and 2012.

Prepaid_expenses_and_other_cur

Prepaid expenses and other current assets	9 Months Ended
	Sep. 30, 2013
Prepaid expenses and other current assets [Abstract]	'
Prepaid expenses and other current assets	'
	Note 4 - Prepaid expenses and other current assets
	Prepaid expenses and other current assets consist of the following:
		30-Sep-13		December 31, 2012
		US$		US$
	Advances to suppliers		1,104,340		4,355,607
	Interest receivable		1,627,047		1,145,244
	Other		2,406,254		589,381
	Total prepaid expenses and other current assets		5,137,641		6,090,232
	Prior to February 2013, the Company paid deposits to domestic and international suppliers for the principal raw materials ordered. The Company made advanced orders of raw materials based upon (1) the demand and supply situation in the raw materials market and (2) the forecasted demand of products. Starting from March 2013, the Company switched to 30 days credit terms for purchases from its domestic suppliers.  All advances to suppliers as of September 30, 2013 are related to the purchase of raw materials, which were subsequently received by the Company in October 2013.
	Interest receivable mainly represents the interest earned from the three-month or six-month time deposits, as well as from the restricted cash.
	Other mainly includes value added taxes receivables, other prepaid expenses and staff advances.

Property_plant_and_equipment_n

Property, plant and equipment, net	9 Months Ended
	Sep. 30, 2013
Property, plant and equipment, net [Abstract]	'
Property, plant and equipment, net	'
	Note 5 - Property, plant and equipment, net
	Property, plant and equipment consist of the following:
		30-Sep-13			December 31, 2012
		US$			US$
	Machinery, equipment and furniture		206,216,297			193,999,396
	Motor vehicles		1,676,240			1,438,596
	Workshops and buildings		42,876,029			40,357,145
	Construction in progress		3,705,946			10,471,463
	Total property, plant and equipment		254,474,512			246,266,600
	Less accumulated depreciation		(38,805,345	)		(22,486,467	)
	Property, plant and equipment, net		215,669,167			223,780,133
	For the nine-month periods ended September 30, 2013 and 2012, no interest expense was capitalized as a component of the cost of construction in progress as the amount was inconsequential. Depreciation expense on property, plant and equipment was allocated to the following expense items:
		Three-Month Period Ended September 30,
		2013			2012
		US$			US$
	Cost of revenues		5,321,483			2,521,229
	General and administrative expenses		101,534			46,952
	Research and development expenses		430,360			255,729
	Total depreciation expense		5,853,377			2,823,910
		Nine-Month Period Ended September 30,
		2013			2012
		US$			US$
	Cost of revenues		14,265,007			6,691,838
	General and administrative expenses		827,547			162,241
	Research and development expenses		1,226,324			769,269
	Total depreciation expense		16,318,878			7,623,348

Shortterm_loans

Short-term loans	9 Months Ended
	Sep. 30, 2013
Short-term loans [Abstract]	'
Short-term loans	'
	Note 6 - Short-term loans
			30-Sep-13		31-Dec-12
			US$		US$
	Unsecured loans			157,189,542		65,970,048
	Loans secured by accounts receivable			74,673,203		72,229,981
	Loans secured by bank deposits			20,220,588		23,876,021
	Total short-term bank loans	(a)		252,083,333		162,076,050
	Interest-free loan secured by land use rights	(b)		8,169,935		-
	Total short-term loans			260,253,268		162,076,050
	(a)	As of September 30, 2013 and December 31, 2012, the Company's short-term bank loans bear a weighted average interest rate of 5.9% and 6.1% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms.
		As of September 30, 2013, the Company had total lines of credit with remaining terms less than 12 months of RMB1,978 million (US$323.2 million), of which RMB460.0 million (US$75.2 million) was unused.  These lines of credit are from PRC banks in Harbin, Heilongjiang province and contain certain financial covenants such as total stockholders' equity, debt asset ratio, current ratio, contingent liability ratio and net profit. As of September 30, 2013, the Company has met these financial covenants.
	(b)	On April 11, 2013, the Company obtained a one-year interest-free loan in the amount of RMB50 million (equivalent to US$8 million) from a company affiliated with the People's Government of Shunqing District, Nanchong City, Sichuan Province ("Shunqing Government"). The loan was issued to support Construction of Sichuan Plant. The loan will be secured by a land use right to be granted to the Company in connection with the Project.

Accrued_expenses_and_other_cur

Accrued expenses and other current liabilities	9 Months Ended
	Sep. 30, 2013
Accrued expenses and other current liabilities [Abstract]	'
Accrued expenses and other current liabilities	'
	Note 7 - Accrued expenses and other current liabilities
	Accrued expenses and other current liabilities consist of the following:
		30-Sep-13		December 31, 2012
		US$		US$
	Payables for purchase of property, plant and equipment		27,047,616		30,029,901
	Other		8,171,031		4,413,082
	Accrued expenses and other current liabilities		35,218,647		34,442,983
	Other mainly represents accrued freight expenses, non income tax payables, accrued interest expenses, accrued payroll and employee benefits, and other accrued miscellaneous operating expenses.

Related_party_transactions

Related party transactions

9 Months Ended

Sep. 30, 2013

Related party transactions [Abstract]

'

Related party transactions

'

Note 8 - Related party transactions

The Company entered into related party transactions with Harbin Xinda High-Tech Co., Ltd. ("Xinda High-Tech"), an entity controlled by the wife of Mr. Han, the chief executive officer and controlling stockholder of the Company, Mr. Han and Mr. Han's son.  The significant related party transactions are summarized as follows:

Three-Month Period Ended September 30,

Nine-Month Period Ended September 30,

2013

2012

2013

2012

US$

US$

US$

US$

Costs and expenses resulting from transactions with  related parties:

Rental expenses for plant and office spaces

(a)

201,146

192,270

599,416

448,359

The balances due from and to the related parties are summarized as follows:

30-Sep-13

December 31, 2012

US$

US$

Amounts due from related parties:

Prepaid rent expenses to Xinda High-Tech

(a)

-

219,360

Prepaid rent expenses to Mr. Han's son

(a)

4,085

-

Total

4,085

219,360

Amounts due to a related party:

Rent payable to Xinda High-Tech

(b)

368,479

-

(a)

The Company rents the following plant and office buildings in Harbin, Heilongjiang province from Xinda High-Tech:

Premise Leased

Area (M2)

Annual Rental Fee (US$)

Period of Lease

Plant and office building

20,250

669,919

Between May 1, 2012 and April 30, 2015

Office building

250

8,170

Between January 1, 2012 and December 31, 2013

Office building

3,394

110,915

Between May 1, 2012 and April 30, 2013

Office building

3,394

110,915

Between May 1, 2013 and April 30, 2015

The Company also rents a facility of approximately 3,134 square meters in Harbin, Heilongjiang province from Mr. Han's son for an annual rental fee of RMB100,000 (approximately US$16,294).  The period of the lease is from January 1, 2013 to December 31, 2013.

Income_tax

Income tax	9 Months Ended
	Sep. 30, 2013
Income tax [Abstract]	'
Income tax	'
	Note 9 - Income tax
	The effective income tax rates for the nine-month periods ended September 30, 2013 and 2012 were 24.9% and 23.9%, respectively. The effective income tax rate for the nine-month period ended September 30, 2013 differs from the PRC statutory income tax rate of 25% primarily due to the tax rate differential and partially offsetting by the increase of valuation allowance.
	As of and for the three-month and nine-month periods ended September 30, 2013, the Company did not have any unrecognized tax benefits, and thus no interest and penalties related to unrecognized tax benefits were recorded. In addition, the Company does not expect that the amount of unrecognized tax benefits will change significantly within the next 12 months.

Warrants

Warrants	9 Months Ended
	Sep. 30, 2013
Warrants [Abstract]	'
Warrants	'
	Note 10 - Warrants
	The following is a summary of outstanding warrants as of September 30, 2013:
	Warrants		Exercise Price	Number of Warrants		Remaining
				Outstanding		Contractual Life
			US$			Years
	Series A investor warrants		4.9	1,320,696		1.17
	Series A placement agent warrants		5.5	117,261		1.17
	Total			1,437,957
	The fair values of the warrants as of September 30, 2013 were calculated using Black-Scholes option pricing model with the following assumptions:
		Series A Investor			Series A Placement
		Warrants			Agent Warrants
	Volatility	31.20%			31.20%
	Expected dividends yield		0%		0%
	Fair value of underlying common stock (per share)		4.6		4.6
	Risk-free interest rate (per annum)		0.15%		0.15%
	During the three-month and nine-month period ended September 30, 2013, Series C Placement Agent Warrants has expired.

Stockholders_equity

Stockholders' equity	9 Months Ended
	Sep. 30, 2013
Stockholders' equity [Abstract]	'
Stockholders' equity	'
	Note 11 - Stockholders' equity
	The changes of each caption of stockholders' equity for the nine-month period ended September 30, 2013 are as follows:
		Series B Preferred Stock		Common Stock									Accumulated
		Number	Amount	Number	Amount	Treasury Stock			Additional Paid-in			Retained	Other		Total
		of Shares		of Shares					Capital			Earnings	Comprehensive		Stockholders' Equity
													Income
			US$		US$
	Balance as of January 1, 2013	1,000,000	100	47,563,772	4,758		(92,694	)		72,583,910		177,208,492		14,658,258		264,362,824
	Net income	-	-	-	-		-			-		76,319,034		-		76,319,034
	Other comprehensive income	-	-	-	-		-			-		-		5,408,011		5,408,011
	Vesting of unvested shares	-	-	305,000	31		-			(31	)	-		-		-
	Stock based compensation	-	-	-	-		-			1,692,373		-		-		1,692,373
	Balance as of September 30, 2013	1,000,000	100	47,868,772	4,789		(92,694	)		74,276,252		253,527,526		20,066,269		347,782,242

Stock_based_compensation

Stock based compensation	9 Months Ended
	Sep. 30, 2013
Stock based compensation [Abstract]	'
Stock based compensation	'
	Note 12 - Stock based compensation
	A summary of stock option activity is as follows:
			Number of			Weighted Average		Weighted Average	Aggregate Intrinsic Value
			Options			Exercise Price		Remaining	US$
			Outstanding			US$		Contractual Life
								Years
	Outstanding as of December 31, 2012			148,500			8.01
	Granted			-			-
	Exercised			-			-
	Forfeited			-			-
	Vested			-148,500			8.01
	Outstanding as of September 30, 2013			-			-	6.86	-
	Vested and expected to vest as of September 30, 2013			-			-	6.86	-
	The Company recognized US$34,590 and US$83,744  of share-based compensation expense in general and administration expenses relating to stock options for the three-month periods ended September 30, 2013 and 2012, respectively, and US$127,215 and US$248,500  of share-based compensation expense in general and administration expenses relating to stock options for the nine-month periods ended September 30, 2013 and 2012, respectively. As of September 30, 2013, there was nil unrecognized compensation cost relating to stock options.
	On May 8, 2013, the board of directors approved the grant of 26,361 nonvested shares to three independent directors, all of which vested on November 8, 2013.
	On August 7, 2013, the Company's Board of Directors approved the grant of (i) 192,370 nonvested shares to certain executive officers and employees which vest on August 7, 2016; (ii) 674,205 nonvested shares to 17 consultants and two independent directors which vest on February 7, 2014.
	A summary of the nonvested shares activity is as follows
		Number of				Weighted Average
		Nonvested Shares				Grant Date Fair Value
						Per share
						US$
	Balance as of December 31, 2012			513,000			4.66
	Granted			892,936			4.52
	Vested			(285,000	)		4.82
	Outstanding as of September 30, 2013			1,120,936			4.51
	The Company recognized US$1,067,745 and US$417,364 of share-based compensation expense in general and administration expenses relating to nonvested shares for the three-month periods ended September 30, 2013 and 2012, respectively, and US$1,565,158 and US$558,921 of share-based compensation expense in general and administration expenses relating to nonvested shares for the nine-month periods ended September 30, 2013 and 2012, respectively. As of September 30, 2013, there was US$3,601,910 total unrecognized compensation cost relating to nonvested shares, which is to be recognized over a weighted average period of 1.11 years.

Earnings_per_share

Earnings per share	9 Months Ended
	Sep. 30, 2013
Earnings per share [Abstract]	'
Earnings per share	'
	Note 13 - Earnings per share
	Basic and diluted earnings per share are calculated as follows:
		Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
		2013		2012		2013		2012
		US$		US$		US$		US$
	Numerator:
	Net income		41,061,566		25,272,649		76,319,034		68,607,784
	Less: Dividends to Series C convertible preferred stockholders		-		-30		-		-90
	Net income available to common stockholders		41,061,566		25,272,619		76,319,034		68,607,694
	Less:
	Earnings allocated to participating Series C convertible preferred stock		-		-172		-		-468
	Earnings allocated to participating Series D convertible preferred stock		(10,168,194)		-6,326,835		-19,000,909		-17,225,253
	Earnings allocated to participating nonvested shares		(493,187)		-139,195		-583,257		-196,695
	Net income for basic and dilutive earnings per share		30,400,185		18,806,417		56,734,868		51,185,278
	Denominator:
	Denominator for basic and diluted earnings per share		47,835,729		47,559,750		47,774,447		47,544,408
	Earnings per share:
	Basic and diluted		0.64		0.4		1.19		1.08
	The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the three-month periods and nine-month periods ended September 30, 2013 and 2012 because their effects are anti-dilutive:
		Three-Month				Nine-Month
		Period Ended September 30,				Period Ended September 30,
		2013		2012		2013		2012
	Shares issuable upon conversion of Series D convertible preferred stock		16,000,000		16,000,000		16,000,000		16,000,000
	Shares issuable upon exercise of Series A investor warrant		1,320,696		1,320,696		1,320,696		1,320,696
	Shares issuable upon exercise of Series A placement agent warrant		117,261		117,261		117,261		117,261
	Shares issuable upon exercise of Series C placement agent warrant		-		166,667		-		166,667
	Shares issuable upon exercise of stock options		-		148,500		-		148,500

Commitments_and_contingencies

Commitments and contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and contingencies [Abstract]	'
Commitments and contingencies	'
	Note 14 - Commitments and contingencies
	(1)	Lease commitments
	Future minimum lease payments under non-cancellable operating leases agreements as of September 30, 2013 were as follows.
			US$
	Period from October 1, 2013 to December 31, 2013			369,223
	Years ending December 31,
	2014			1,436,327
	2015			751,958
	2016			247,013
	2017			61,114
	2018 and thereafter			-
	Rental expenses incurred for operating leases of plant and equipment and office spaces were US$336,584 and US$214,243 for the three-month periods ended September 30, 2013 and 2012, and US$734,854 and US$511,738 for the nine-month periods ended September 30, 2013 and 2012, respectively. There are no step rent provisions, escalation clauses, capital improvement funding requirements, other lease concessions or contingent rent in the lease agreements. The Company has no legal or contractual asset retirement obligations at the end of leases. The company's leases do not contain any contingent rent payments terms.
	(2)	Plant construction
	Pursuant to the agreement with Harbin Shengtong Engineering Plastics Co. Ltd. ("Harbin Shengtong"), the Company has a remaining commitment of RMB207.4 million (equivalent to US$33.9 million) as of September 30, 2013, for the acquisition of the land use rights and a plant consisting of five workshops and a building (the "Project") in Harbin upon completion in exchange for a total consideration of RMB470 million (approximately US$76.9 million) in cash. Harbin Shengtong is responsible to complete the construction of the plant and workshops according to the Company's specifications.  Once the Project is fully completed and accepted by the Company, Harbin Shengtong shall transfer titles of various rights under the Project to the Company.  As of September 30, 2013, five workshops were completed and placed into the service by the Company.  The titles of the five workshops, the building and the related land use rights are expected to be transferred to the Company once the Project is completed in the fourth quarter of 2013.
	On March 8, 2013, Xinda Holding (HK) Company Limited ("Xinda Holding (HK)"), a wholly owned subsidiary of the Company, entered into an Investment Agreement with Shunqing Government, pursuant to which Xinda Holding (HK) will invest RMB1.8 billion (equivalent to US$295 million) in property, plant and equipment and approximately RMB0.6 billion (equivalent to US$98 million) in working capital, for the Construction of Sichuan Plant.
	-3	Equipment acquisition
	As of September 30, 2013, the Company has a commitment of RMB4,926,600 (equivalent to US$805,000) for the acquisition of equipment.

Basis_of_presentation_signific1

Basis of presentation, significant concentrations and risks (Policy)	9 Months Ended
	Sep. 30, 2013
Basis Of Presentation Significant Concentrations And Risks [Abstract]	'
Basis of presentation	'
	(a) Basis of presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by rules and regulations of the United States Securities and Exchange Commission. The condensed consolidated balance sheet as of December 31, 2012 was derived from the audited consolidated financial statements of China XD Plastics Company Limited ("China XD Plastics") and subsidiaries (collectively, the "Company"). The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated balance sheet of the Company as of December 31, 2012, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the year then ended, included in the Company's Annual Report on Form 10-K filed with the SEC on March 25, 2013.
	In the opinion of the management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the financial position as of September 30, 2013, the results of operations for the three-month and nine-month periods ended September 30, 2013 and 2012, and the cash flows for the nine-month periods ended September 30, 2013 and 2012, have been made.
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories and deferred income tax assets, the useful lives of property, plant and equipment, the collectibility of accounts receivable, the probability of the redemption of redeemable Series D convertible preferred stock, the fair values of financial instruments and stock-based compensation awards, and the accruals for tax uncertainties and other contingencies. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
Significant concentrations and risks	'
	(b) Significant concentrations and risks
	Sales concentration
	The Company sells its products, substantially through approved distributors in the People's Republic of China (the "PRC").  The Company's sales are highly concentrated.  Sales to four major distributors, which individually exceeded 10% of the Company's revenues for the three-month and nine-month periods ended September 30, 2013 and 2012 (with the exception of one distributor in the three-month and nine-month periods ended September 30, 2012), are as follows:
		Three-Month Period Ended September 30,
		2013				2012
		US$		%		US$		%
	Distributor A		65,069,987		22.20%		15,961,659		9.8%
	Distributor B		56,245,919		19.20%		55,672,801		34.1%
	Distributor C		38,080,146		13.00%		24,313,075		14.90%
	Distributor D		35,631,930		12.20%		24,115,942		14.80%
	Total		195,027,982		66.6%		120,063,477		73.60%
		Nine-Month Period Ended September 30,
		2013				2012
		US$		%		US$		%
	Distributor A		170,707,884		25.60%		34,468,238		8.00%
	Distributor B		137,629,782		20.70%		143,676,477		33.30%
	Distributor C		90,659,257		13.60%		64,657,926		15.00%
	Distributor D		85,700,647		12.90%		63,549,286		14.70%
	Total		484,697,570		72.80%		306,351,927		71.00%
	The Company expects revenues from these distributors to continue to represent a substantial portion of its revenue in the future. Any factor adversely affecting the automobile industry in the PRC or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.
	Purchase concentration of Raw materials and Production Equipment
	The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. The Company purchases substantially all of its raw materials through three distributors.  Raw material purchases from these three suppliers, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 56.6% and 99.2% of the Company's total raw material purchases for the three-month periods ended September 30, 2013 and 2012, respectively, and 79.9% and 99.6% of the Company's total raw material purchase for the nine-month periods ended September 30, 2013 and 2012, respectively. Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.
	The Company has three production facilities, all of which are located in Harbin, Heilongjiang province of the PRC. The Company plans to construct a 300,000 metric ton plastics production project and affiliated R&D center and training center project in Yinghua Industrial Park, Shunqing District, Nanchong City, Sichuan Province (the "Construction of Sichuan Plant"), the fourth production base, in Sichuan province of the PRC. The Company purchased equipment from a major equipment distributor, which accounted for 93.1% and 99.9% of the Company's total equipment purchases for the three-month periods ended September 30, 2013 and 2012, respectively, and accounted for 78.5% and 99.8% of the Company's total equipment purchases for the nine-month periods ended September 30, 2013 and 2012, respectively. A change of the supplier could cause a delay in manufacturing and a possible loss of sales, which could adversely affect the Company's business, financial position and results of operations.  The majority owner of the equipment distributor is also the majority owner of a major raw material supplier that supplied approximately 12.8% and 20.8% of the Company's total raw material purchases for the three-month periods ended September 30, 2013 and 2012, and 16.0% and 23.9% of the Company's total raw material purchases for the nine-month periods ended September 30, 2013 and 2012, respectively.  In addition, the majority owner of the equipment distributor is also the majority owner of sales Distributor D presented above.
	Cash concentration
	Cash and cash equivalents, restricted cash and time deposits maintained at banks consist of the following:
		30-Sep-13		31-Dec-12
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC		279,774,799		140,788,222
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.		78,027		18,391
	Financial Institutions in the PRC		11		7,828,156
	Financial Institution in Hong Kong Special Administrative Region		485,969		11,287
	Euro denominated bank deposits with a financial institution in Hong Kong		151,433		-
	The bank deposits with financial institutions in the PRC are not insured by any government authority.  To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC with acceptable credit rating.
	Cash that is restricted as to withdrawal or usage is reported as restricted cash in the condensed consolidated balance sheets and is not included as cash and cash equivalents in the condensed consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for bills payable relating to purchase of raw materials are reported as restricted cash and amounted to US$1,633,987 and US$10,914,753 as of September 30, 2013 and December 31, 2012, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company. Short-term bank deposits that are pledged as collateral for letter of credit relating to purchase of raw materials are reported as restricted cash and amounted to nil and US$1,225,402 as of September 30, 2013 and December 31, 2012. The cash will be available for use by the Company after 60 days since the issuance of the letter of credit. The cash flows from the pledged bank deposits, which relate to purchases of raw materials, are reported within cash flows from operating activities in the condensed consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for short-term bank borrowings are reported as restricted cash and amounted to US$4,044,118 and US$4,775,204 as of September 30, 2013 and December 31, 2012, respectively. The cash flows from such bank deposits are reported within cash flows from financing activities in the condensed consolidated statements of cash flows.
	Time deposits represent certificates of deposit with an initial term of six months when purchased.  As of September 30, 2013 and December 31, 2012, the Company's time deposits bear a weighted average interest rate of 3.0% and 3.16% per annum, respectively.

Basis_of_presentation_signific2

Basis of presentation, significant concentrations and risks (Tables)	9 Months Ended
	Sep. 30, 2013
Basis Of Presentation Significant Concentrations And Risks [Abstract]	'
Schedule of Sales Concentrations by Major Distributors	'
	Sales to four major distributors, which individually exceeded 10% of the Company's revenues for the three-month and nine-month periods ended September 30, 2013 and 2012 (with the exception of one distributor in the three-month and nine-month periods ended September 30, 2012), are as follows:
		Three-Month Period Ended September 30,
		2013				2012
		US$		%		US$		%
	Distributor A		65,069,987		22.20%		15,961,659		9.8%
	Distributor B		56,245,919		19.20%		55,672,801		34.1%
	Distributor C		38,080,146		13.00%		24,313,075		14.90%
	Distributor D		35,631,930		12.20%		24,115,942		14.80%
	Total		195,027,982		66.6%		120,063,477		73.60%
		Nine-Month Period Ended September 30,
		2013				2012
		US$		%		US$		%
	Distributor A		170,707,884		25.60%		34,468,238		8.00%
	Distributor B		137,629,782		20.70%		143,676,477		33.30%
	Distributor C		90,659,257		13.60%		64,657,926		15.00%
	Distributor D		85,700,647		12.90%		63,549,286		14.70%
	Total		484,697,570		72.80%		306,351,927		71.00%
Schedule of Cash and Cash Equivalents	'
	Cash and cash equivalents, restricted cash and time deposits maintained at banks consist of the following:
		30-Sep-13		31-Dec-12
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC		279,774,799		140,788,222
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.		78,027		18,391
	Financial Institutions in the PRC		11		7,828,156
	Financial Institution in Hong Kong Special Administrative Region		485,969		11,287
	Euro denominated bank deposits with a financial institution in Hong Kong		151,433		-

Accounts_receivable_Tables

Accounts receivable (Tables)	9 Months Ended
	Sep. 30, 2013
Accounts receivable [Abstract]	'
Schedule of Accounts Receivable	'
	Accounts receivable consist of the following:
		30-Sep-13			31-Dec-12
		US$			US$
	Accounts receivable		265,391,325			143,991,818
	Allowance for doubtful accounts		(145,816	)		(148,054	)
	Accounts receivable, net		265,245,509			143,843,764

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2013
Inventories [Abstract]	'
Schedule of Inventories	'
	Inventories consist of the following:
		30-Sep-13		December 31, 2012
		US$		US$
	Raw materials		62,265,083		70,672,300
	Work in progress		286,167		110,964
	Finished goods		56,580,146		7,479,807
	Total inventories		119,131,396		78,263,071

Prepaid_expenses_and_other_cur1

Prepaid expenses and other current assets (Tables)	9 Months Ended
	Sep. 30, 2013
Prepaid expenses and other current assets [Abstract]	'
Schedule of Prepaid Expense and Other Assets Current	'
	Prepaid expenses and other current assets consist of the following:
		30-Sep-13		December 31, 2012
		US$		US$
	Advances to suppliers		1,104,340		4,355,607
	Interest receivable		1,627,047		1,145,244
	Other		2,406,254		589,381
	Total prepaid expenses and other current assets		5,137,641		6,090,232

Property_plant_and_equipment_n1

Property, plant and equipment, net (Tables)	9 Months Ended
	Sep. 30, 2013
Property, plant and equipment, net [Abstract]	'
Schedule of Property, Plant and Equipment	'
	Property, plant and equipment consist of the following:
		30-Sep-13			December 31, 2012
		US$			US$
	Machinery, equipment and furniture		206,216,297			193,999,396
	Motor vehicles		1,676,240			1,438,596
	Workshops and buildings		42,876,029			40,357,145
	Construction in progress		3,705,946			10,471,463
	Total property, plant and equipment		254,474,512			246,266,600
	Less accumulated depreciation		(38,805,345	)		(22,486,467	)
	Property, plant and equipment, net		215,669,167			223,780,133
Schedule of the Allocation of Depreciation Expense on Property, Plant and Equipment	'
	Depreciation expense on property, plant and equipment was allocated to the following expense items:
		Three-Month Period Ended September 30,
		2013			2012
		US$			US$
	Cost of revenues		5,321,483			2,521,229
	General and administrative expenses		101,534			46,952
	Research and development expenses		430,360			255,729
	Total depreciation expense		5,853,377			2,823,910
		Nine-Month Period Ended September 30,
		2013			2012
		US$			US$
	Cost of revenues		14,265,007			6,691,838
	General and administrative expenses		827,547			162,241
	Research and development expenses		1,226,324			769,269
	Total depreciation expense		16,318,878			7,623,348

Shortterm_loans_Tables

Short-term loans (Tables)	9 Months Ended
	Sep. 30, 2013
Short-term loans [Abstract]	'
Schedule of Short-term Loans	'
			30-Sep-13		31-Dec-12
			US$		US$
	Unsecured loans			157,189,542		65,970,048
	Loans secured by accounts receivable			74,673,203		72,229,981
	Loans secured by bank deposits			20,220,588		23,876,021
	Total short-term bank loans	(a)		252,083,333		162,076,050
	Interest-free loan secured by land use rights	(b)		8,169,935		-
	Total short-term loans			260,253,268		162,076,050
	(a)	As of September 30, 2013 and December 31, 2012, the Company's short-term bank loans bear a weighted average interest rate of 5.9% and 6.1% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms.
		As of September 30, 2013, the Company had total lines of credit with remaining terms less than 12 months of RMB1,978 million (US$323.2 million), of which RMB460.0 million (US$75.2 million) was unused.  These lines of credit are from PRC banks in Harbin, Heilongjiang province and contain certain financial covenants such as total stockholders' equity, debt asset ratio, current ratio, contingent liability ratio and net profit. As of September 30, 2013, the Company has met these financial covenants.
	(b)	On April 11, 2013, the Company obtained a one-year interest-free loan in the amount of RMB50 million (equivalent to US$8 million) from a company affiliated with the People's Government of Shunqing District, Nanchong City, Sichuan Province ("Shunqing Government"). The loan was issued to support Construction of Sichuan Plant. The loan will be secured by a land use right to be granted to the Company in connection with the Project.

Accrued_expenses_and_other_cur1

Accrued expenses and other current liabilities (Tables)	9 Months Ended
	Sep. 30, 2013
Accrued expenses and other current liabilities [Abstract]	'
Schedule of Accrued Expenses and Other Current Liabilities	'
	Accrued expenses and other current liabilities consist of the following:
		30-Sep-13		December 31, 2012
		US$		US$
	Payables for purchase of property, plant and equipment		27,047,616		30,029,901
	Other		8,171,031		4,413,082
	Accrued expenses and other current liabilities		35,218,647		34,442,983
	Other mainly represents accrued freight expenses, non income tax payables, accrued interest expenses, accrued payroll and employee benefits, and other accrued miscellaneous operating expenses.

Related_party_transactions_Tab

Related party transactions (Tables)

9 Months Ended

Sep. 30, 2013

Related party transactions [Abstract]

'

Schedule of Significant Related Party Transactions

'

The significant related party transactions are summarized as follows:

Three-Month Period Ended September 30,

Nine-Month Period Ended September 30,

2013

2012

2013

2012

US$

US$

US$

US$

Costs and expenses resulting from transactions with  related parties:

Rental expenses for plant and office spaces

(a)

201,146

192,270

599,416

448,359

Schedule of Amounts Due From To Related Parties

'

The balances due from and to the related parties are summarized as follows:

30-Sep-13

December 31, 2012

US$

US$

Amounts due from related parties:

Prepaid rent expenses to Xinda High-Tech

(a)

-

219,360

Prepaid rent expenses to Mr. Han's son

(a)

4,085

-

Total

4,085

219,360

Amounts due to a related party:

Rent payable to Xinda High-Tech

(b)

368,479

-

Schedule of Plant and Office Buildings in Harbin

'

The Company rents the following plant and office buildings in Harbin, Heilongjiang province from Xinda High-Tech:

Premise Leased

Area (M2)

Annual Rental Fee (US$)

Period of Lease

Plant and office building

20,250

669,919

Between May 1, 2012 and April 30, 2015

Office building

250

8,170

Between January 1, 2012 and December 31, 2013

Office building

3,394

110,915

Between May 1, 2012 and April 30, 2013

Office building

3,394

110,915

Between May 1, 2013 and April 30, 2015

Warrants_Tables

Warrants (Tables)	9 Months Ended
	Sep. 30, 2013
Warrants [Abstract]	'
Summary of Outstanding Warrants	'
	The following is a summary of outstanding warrants as of September 30, 2013:
	Warrants		Exercise Price	Number of Warrants		Remaining
				Outstanding		Contractual Life
			US$			Years
	Series A investor warrants		4.9	1,320,696		1.17
	Series A placement agent warrants		5.5	117,261		1.17
	Total			1,437,957
Warrants Fair Value Assumptions	'
	The fair values of the warrants as of September 30, 2013 were calculated using Black-Scholes option pricing model with the following assumptions:
		Series A Investor			Series A Placement
		Warrants			Agent Warrants
	Volatility	31.20%			31.20%
	Expected dividends yield		0%		0%
	Fair value of underlying common stock (per share)		4.6		4.6
	Risk-free interest rate (per annum)		0.15%		0.15%

Stockholders_equity_Tables

Stockholders' equity (Tables)	9 Months Ended
	Sep. 30, 2013
Stockholders' equity [Abstract]	'
Schedule of Changes in Stockholders' Equity	'
	The changes of each caption of stockholders' equity for the nine-month period ended September 30, 2013 are as follows:
		Series B Preferred Stock		Common Stock									Accumulated
		Number	Amount	Number	Amount	Treasury Stock			Additional Paid-in			Retained	Other		Total
		of Shares		of Shares					Capital			Earnings	Comprehensive		Stockholders' Equity
													Income
			US$		US$
	Balance as of January 1, 2013	1,000,000	100	47,563,772	4,758		(92,694	)		72,583,910		177,208,492		14,658,258		264,362,824
	Net income	-	-	-	-		-			-		76,319,034		-		76,319,034
	Other comprehensive income	-	-	-	-		-			-		-		5,408,011		5,408,011
	Vesting of unvested shares	-	-	305,000	31		-			(31	)	-		-		-
	Stock based compensation	-	-	-	-		-			1,692,373		-		-		1,692,373
	Balance as of September 30, 2013	1,000,000	100	47,868,772	4,789		(92,694	)		74,276,252		253,527,526		20,066,269		347,782,242

Stock_based_compensation_Table

Stock based compensation (Tables)	9 Months Ended
	Sep. 30, 2013
Stock based compensation [Abstract]	'
Schedule of Stock Options Activity	'
	A summary of stock option activity is as follows:
			Number of			Weighted Average		Weighted Average	Aggregate Intrinsic Value
			Options			Exercise Price		Remaining	US$
			Outstanding			US$		Contractual Life
								Years
	Outstanding as of December 31, 2012			148,500			8.01
	Granted			-			-
	Exercised			-			-
	Forfeited			-			-
	Vested			-148,500			8.01
	Outstanding as of September 30, 2013			-			-	6.86	-
	Vested and expected to vest as of September 30, 2013			-			-	6.86	-
Schedule of Nonvested Share Activity	'
	A summary of the nonvested shares activity is as follows
		Number of				Weighted Average
		Nonvested Shares				Grant Date Fair Value
						Per share
						US$
	Balance as of December 31, 2012			513,000			4.66
	Granted			892,936			4.52
	Vested			(285,000	)		4.82
	Outstanding as of September 30, 2013			1,120,936			4.51

Earnings_per_share_Tables

Earnings per share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings per share [Abstract]	'
Calculation of Basic and Diluted Earnings Per Share	'
	Basic and diluted earnings per share are calculated as follows:
		Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
		2013		2012		2013		2012
		US$		US$		US$		US$
	Numerator:
	Net income		41,061,566		25,272,649		76,319,034		68,607,784
	Less: Dividends to Series C convertible preferred stockholders		-		-30		-		-90
	Net income available to common stockholders		41,061,566		25,272,619		76,319,034		68,607,694
	Less:
	Earnings allocated to participating Series C convertible preferred stock		-		-172		-		-468
	Earnings allocated to participating Series D convertible preferred stock		(10,168,194)		-6,326,835		-19,000,909		-17,225,253
	Earnings allocated to participating nonvested shares		(493,187)		-139,195		-583,257		-196,695
	Net income for basic and dilutive earnings per share		30,400,185		18,806,417		56,734,868		51,185,278
	Denominator:
	Denominator for basic and diluted earnings per share		47,835,729		47,559,750		47,774,447		47,544,408
	Earnings per share:
	Basic and diluted		0.64		0.4		1.19		1.08
Summary of Potentially Dilutive Securities	'
	The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the three-month periods and nine-month periods ended September 30, 2013 and 2012 because their effects are anti-dilutive:
		Three-Month				Nine-Month
		Period Ended September 30,				Period Ended September 30,
		2013		2012		2013		2012
	Shares issuable upon conversion of Series D convertible preferred stock		16,000,000		16,000,000		16,000,000		16,000,000
	Shares issuable upon exercise of Series A investor warrant		1,320,696		1,320,696		1,320,696		1,320,696
	Shares issuable upon exercise of Series A placement agent warrant		117,261		117,261		117,261		117,261
	Shares issuable upon exercise of Series C placement agent warrant		-		166,667		-		166,667
	Shares issuable upon exercise of stock options		-		148,500		-		148,500

Commitments_and_contingencies_

Commitments and contingencies (Tables)	9 Months Ended
	Sep. 30, 2013
Commitments and contingencies [Abstract]	'
Schedule of Future Minimum Rental Payments	'
	Future minimum lease payments under non-cancellable operating leases agreements as of September 30, 2013 were as follows.
		US$
	Period from October 1, 2013 to December 31, 2013		369,223
	Years ending December 31,
	2014		1,436,327
	2015		751,958
	2016		247,013
	2017		61,114
	2018 and thereafter		-

Basis_of_presentation_signific3

Basis of presentation, significant concentrations and risks (Sales and Purchase Concentration) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Concentration Risk [Line Items]	'	'	'	'
Revenues	$293,139,049	$163,368,820	$666,256,978	$431,208,409
Distributor A [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Revenues	65,069,987	15,961,659	170,707,884	34,468,238
Distributor B [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Revenues	56,245,919	55,672,801	137,629,782	143,676,477
Distributor C [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Revenues	38,080,146	24,313,075	90,659,257	64,657,926
Distributor D [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Revenues	35,631,930	24,115,942	85,700,647	63,549,286
Major Distributors Aggregate [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Revenues	$195,027,982	$120,063,477	$484,697,570	$306,351,927
Equipment Supplier Concentration Risk [Member] | Major Customer [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, percentage	93.10%	99.90%	78.50%	99.80%
Supplier Concentration Risk [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, number of customers	3	3	3	3
Concentration risk, percentage	56.60%	99.20%	79.90%	99.60%
Supplier Concentration Risk [Member] | Major Customer [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, percentage	12.80%	20.80%	16.00%	23.90%
Revenues [Member] | Distributor A [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, percentage	22.20%	9.80%	25.60%	8.00%
Revenues [Member] | Distributor B [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, percentage	19.20%	34.10%	20.70%	33.30%
Revenues [Member] | Distributor C [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, percentage	13.00%	14.90%	13.60%	15.00%
Revenues [Member] | Distributor D [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, percentage	12.20%	14.80%	12.90%	14.70%
Revenues [Member] | Major Distributors Aggregate [Member]	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk, percentage	66.60%	73.60%	72.80%	71.00%

Basis_of_presentation_signific4

Basis of presentation, significant concentrations and risks (Cash Concentration) (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

RMB denominated bank deposits with financial institutions in the PRC [Member]

RMB denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with a financial institution in the U.S. [Member]

U.S. dollar denominated bank deposits with a financial institution in the U.S. [Member]

U.S. dollar denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong Special Administrative Region [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong Special Administrative Region [Member]

Euro denominated bank deposits with a financial institution in Hong Kong [Member]

Euro denominated bank deposits with a financial institution in Hong Kong [Member]

Short-term bank deposits pledged as collateral for bills payable relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for bills payable relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for letter of credit relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for letter of credit relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for short-term bank borrowings [Member]

Short-term bank deposits pledged as collateral for short-term bank borrowings [Member]

Time Deposits [Member]

Time Deposits [Member]

Certificates of Deposit [Member]

Restricted Cash and Cash Equivalents Items [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash, cash equivalents, restricted cash and time deposits maintained at banks

'

'

$279,774,799

$140,788,222

$78,027

$18,391

$11

$7,828,156

$485,969

$11,287

$151,433

'

'

'

'

'

'

'

'

'

'

Restricted cash

$5,678,105

$16,915,359

'

'

'

'

'

'

'

'

'

'

$1,633,987

$10,914,753

$1,225,402

$1,225,402

$4,044,118

$4,775,204

'

'

'

Term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 months

Weighted average interest rate for term deposits

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

3.16%

'

Accounts_receivable_Details

Accounts receivable (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Accounts receivable [Abstract]	'	'
Accounts receivables	$265,391,325	$143,991,818
Allowance for doubtful accounts	-145,816	-148,054
Accounts receivable, net	265,245,509	143,843,764
Notes receivable	$4,843,854	$927,390

Inventories_Details

Inventories (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Inventories [Abstract]	'	'
Raw materials	$62,265,083	$70,672,300
Work in progress	286,167	110,964
Finished goods	56,580,146	7,479,807
Total inventories	$119,131,396	$78,263,071

Prepaid_expenses_and_other_cur2

Prepaid expenses and other current assets (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Prepaid expenses and other current assets [Abstract]	'	'
Advances to suppliers	$1,104,340	$4,355,607
Interest receivable	1,627,047	1,145,244
Other	2,406,254	589,381
Total prepaid expenses and other current assets	$5,137,641	$6,090,232

Property_plant_and_equipment_n2

Property, plant and equipment, net (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	$254,474,512	$246,266,600
Less accumulated depreciation	-38,805,345	-22,486,467
Property, plant and equipment, net	215,669,167	223,780,133
Machinery, equipment and furniture [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	206,216,297	193,999,396
Motor vehicles [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	1,676,240	1,438,596
Workshops and buildings [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	42,876,029	40,357,145
Construction in progress [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	$3,705,946	$10,471,463

Property_plant_and_equipment_n3

Property, plant and equipment, net (Allocated Depreciation Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation expenses	$5,853,377	$2,823,910	$16,318,878	$7,623,348
Cost of revenues [Member]	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation expenses	5,321,483	2,521,229	14,265,007	6,691,838
General and administration expenses [Member]	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation expenses	101,534	46,952	827,547	162,241
Research and development expenses [Member]	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation expenses	$430,360	$255,729	$1,226,324	$769,269

Shortterm_loans_Details

Short-term loans (Details)

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Apr. 11, 2013

Apr. 11, 2013

Dec. 31, 2012

USD ($)

CNY

USD ($)

Unsecured loans [Member]

Unsecured loans [Member]

Loans secured by accounts receivable [Member]

Loans secured by accounts receivable [Member]

Loans secured by bank deposits [Member]

Loans secured by bank deposits [Member]

Total short-term bank loans [Member]

Total short-term bank loans [Member]

Interest-free loan secured by Land use rights [Member]

Interest-free loan secured by Land use rights [Member]

Interest-free loan secured by Land use rights [Member]

Interest-free loan secured by Land use rights [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

CNY

USD ($)

Short-term Debt [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Short-term loans

$260,253,268

'

$162,076,050

$157,189,542

$65,970,048

$74,673,203

$72,229,981

$20,220,588

$23,876,021

$252,083,333

$162,076,050

$8,169,935

'

'

'

Weighted average interest rate

5.90%

5.90%

6.10%

'

'

'

'

'

'

'

'

'

'

'

'

Total lines of credit

323,200,000

1,978,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Unusued lines of credit

75,200,000

460,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

One-year interest-free loan

'

'

'

'

'

'

'

'

'

'

'

'

$8,000,000

50,000,000

'

Accrued_expenses_and_other_cur2

Accrued expenses and other current liabilities (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Accrued expenses and other current liabilities [Abstract]	'	'
Payables for purchase of property, plant and equipment	$27,047,616	$30,029,901
Other	8,171,031	4,413,082
Accrued expenses and other current liabilities	$35,218,647	$34,442,983

Related_party_transactions_Sch

Related party transactions (Schedule of Significant Related Party Transactions) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Related party transactions [Abstract]	'	'	'	'
Rental expenses for plant and office spaces	$201,146	$192,270	$599,416	$448,359

Related_party_transactions_Sch1

Related party transactions (Schedule of Amounts Due From Related Parties) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]	'	'
Prepaid rent expenses to related party	$4,085	$219,360
Rent payable to related party	368,479	'
Xinda High-Tech [Member]	'	'
Related Party Transaction [Line Items]	'	'
Prepaid rent expenses to related party	'	219,360
Rent payable to related party	368,479	'
Mr. Han's son [Member]	'	'
Related Party Transaction [Line Items]	'	'
Prepaid rent expenses to related party	$4,085	'

Related_party_transactions_Sch2

Related party transactions (Schedule of Plant and Office Buildings in Harbin) (Details)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
	Plant and Office Building 1 [Member]	Office Building 1 [Member]	Office Building 2 [Member]	Office Building 3 [Member]	Facility [Member]	Facility [Member]
	USD ($)	USD ($)	USD ($)	USD ($)	Xinda High-Tech and Mr. Han's son [Member]	Xinda High-Tech and Mr. Han's son [Member]
	sqm	sqm	sqm	sqm	USD ($)	CNY
					sqm
Related Party Transaction [Line Items]	'	'	'	'	'	'
Annual Rental Fee	$669,919	$8,170	$110,915	$110,915	$16,294	100,000
Area (Square Meters)	20,250	250	3,394	3,394	3,134	3,134
Lease start date	1-May-12	1-Jan-12	1-May-12	1-May-13	1-Jan-13	1-Jan-13
Lease expiration period	30-Apr-15	31-Dec-13	30-Apr-13	30-Apr-15	31-Dec-13	31-Dec-13

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Income Tax [Line Items]	'	'
Effective income tax rate	24.90%	23.90%
PRC statutory income tax rate	25.00%	'

Warrants_Summary_of_Outstandin

Warrants (Summary of Outstanding Warrants) (Details)	Sep. 30, 2013
Class of Warrant or Right [Line Items]	'
Number of Warrants Outstanding	1,437,957
Series A Investors Warrants [Member]	'
Class of Warrant or Right [Line Items]	'
Exercise Price	4.9
Number of Warrants Outstanding	1,320,696
Remaining Contractual Life	'1 year 2 months 1 day
Series A Placement Agents Warrants [Member]	'
Class of Warrant or Right [Line Items]	'
Exercise Price	5.5
Number of Warrants Outstanding	117,261
Remaining Contractual Life	'1 year 2 months 1 day

Warrants_Warrants_Fair_Value_A

Warrants (Warrants Fair Value Assumptions) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Series A Investors Warrants [Member]	'
Share-based Goods and Nonemployee Services Transaction [Line Items]	'
Volatility	31.20%
Expected dividend yield	0.00%
Fair value of underlying common stock (per share)	$4.60
Risk-free interest rate (per annum)	0.15%
Series A Placement Agents Warrants [Member]	'
Share-based Goods and Nonemployee Services Transaction [Line Items]	'
Volatility	31.20%
Expected dividend yield	0.00%
Fair value of underlying common stock (per share)	$4.60
Risk-free interest rate (per annum)	0.15%

Stockholders_equity_Details

Stockholders' equity (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stockholders Equity [Line Items]	'	'	'	'
Balance as of January 1, 2013	'	'	$264,362,824	'
Net income	41,061,566	25,272,649	76,319,034	68,607,784
Other comprehensive income	'	'	5,408,011	'
Vesting of unvested shares	'	'	'	'
Stock based compensation	'	'	1,692,373	'
Balance as of September 30, 2013	347,782,242	'	347,782,242	'
Series B Preferred Stock [Member]	'	'	'	'
Stockholders Equity [Line Items]	'	'	'	'
Balance as of January 1, 2013	'	'	100	'
Balance as of January 1, 2013, shares	'	'	1,000,000	'
Net income	'	'	'	'
Other comprehensive income	'	'	'	'
Vesting of unvested shares	'	'	'	'
Vesting of unvested shares, shares	'	'	'	'
Stock based compensation	'	'	'	'
Balance as of September 30, 2013	100	'	100	'
Balance as of September 30, 2013, shares	1,000,000	'	1,000,000	'
Common Stock [Member]	'	'	'	'
Stockholders Equity [Line Items]	'	'	'	'
Balance as of January 1, 2013	'	'	4,758	'
Balance as of January 1, 2013, shares	'	'	47,563,772	'
Net income	'	'	'	'
Other comprehensive income	'	'	'	'
Vesting of unvested shares	'	'	31	'
Vesting of unvested shares, shares	'	'	305,000	'
Stock based compensation	'	'	'	'
Balance as of September 30, 2013	4,789	'	4,789	'
Balance as of September 30, 2013, shares	47,868,772	'	47,868,772	'
Treasury Stock [Member]	'	'	'	'
Stockholders Equity [Line Items]	'	'	'	'
Balance as of January 1, 2013	'	'	-92,694	'
Net income	'	'	'	'
Other comprehensive income	'	'	'	'
Vesting of unvested shares	'	'	'	'
Stock based compensation	'	'	'	'
Balance as of September 30, 2013	-92,694	'	-92,694	'
Additional Paid-in Capital [Member]	'	'	'	'
Stockholders Equity [Line Items]	'	'	'	'
Balance as of January 1, 2013	'	'	72,583,910	'
Net income	'	'	'	'
Other comprehensive income	'	'	'	'
Vesting of unvested shares	'	'	-31	'
Stock based compensation	'	'	1,692,373	'
Balance as of September 30, 2013	74,276,252	'	74,276,252	'
Retained Earnings [Member]	'	'	'	'
Stockholders Equity [Line Items]	'	'	'	'
Balance as of January 1, 2013	'	'	177,208,492	'
Net income	'	'	76,319,034	'
Other comprehensive income	'	'	'	'
Vesting of unvested shares	'	'	'	'
Stock based compensation	'	'	'	'
Balance as of September 30, 2013	253,527,526	'	253,527,526	'
Accumulated Other Comprehensive Income [Member]	'	'	'	'
Stockholders Equity [Line Items]	'	'	'	'
Balance as of January 1, 2013	'	'	14,658,258	'
Net income	'	'	'	'
Other comprehensive income	'	'	5,408,011	'
Vesting of unvested shares	'	'	'	'
Stock based compensation	'	'	'	'
Balance as of September 30, 2013	$20,066,269	'	$20,066,269	'

Stock_based_compensation_Narra

Stock based compensation (Narrative) (Details) (USD $)

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Aug. 07, 2013

8-May-13

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Nonvested Shares [Member]

Nonvested Shares [Member]

Nonvested Shares [Member]

Nonvested Shares [Member]

Nonvested Shares [Member]

Nonvested Shares [Member]

Nonvested Shares [Member]

General and administration expenses [Member]

General and administration expenses [Member]

General and administration expenses [Member]

General and administration expenses [Member]

General and administration expenses [Member]

General and administration expenses [Member]

General and administration expenses [Member]

General and administration expenses [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Stock based compensation expense

'

$34,590

$83,744

$127,215

$248,500

'

'

'

$1,067,745

$417,364

$1,565,158

$558,921

Unrecognized compensation cost related to stock options

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized compensation cost

'

'

'

'

'

'

'

$3,601,910

'

'

'

'

Unrecognized compensation cost, recognition period

'

'

'

'

'

'

'

'1 year 1 month 10 days

'

'

'

'

Shares approved to grant to consultants and independent directors

'

'

'

'

'

674,205

26,361

'

'

'

'

'

Shares approved to grant to certain executive officers and employees

'

'

'

'

'

192,370

'

'

'

'

'

'

Stock_based_compensation_Summa

Stock based compensation (Summary of Stock Options Activity) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Number of Options Outstanding	'
Outstanding as of December 31, 2012	148,500
Granted	'
Exercised	'
Forfeited	'
Vested	-148,500
Outstanding as of September 30, 2013	'
Vested and expected to vest as of September 30, 2013	'
Weighted Average Exercise Price	'
Outstanding as of December 31, 2012	$8.01
Granted	'
Exercised	'
Forfeited	'
Vested	$8.01
Outstanding as of September 30, 2013	'
Vested and expected to vest as of September 30, 2013	'
Weighted Average Remaining Contractual Life Years	'
Outstanding as of September 30, 2013	'6 years 10 months 10 days
Vested and expected to vest as of September 30, 2013	'6 years 10 months 10 days
Aggregate Intrinsic Value	'
Outstanding as of September 30, 2013	'
Vested and expected to vest as of September 30, 2013	'

Stock_based_compensation_Summa1

Stock based compensation (Summary of Nonvested Shares Activity) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Number of Nonvested Shares	'
Vested	-148,500
Weighted Average Grant Date Fair Value Per Share	'
Granted	'
Nonvested Shares [Member]	'
Number of Nonvested Shares	'
Balance as of December 31, 2012	513,000
Granted	892,936
Vested	-285,000
Outstanding as of September 30, 2013	1,120,936
Weighted Average Grant Date Fair Value Per Share	'
Balance as of December 31, 2012	$4.66
Granted	$4.52
Vested	$4.82
Outstanding as of September 30, 2013	$4.51

Earnings_per_share_Calculation

Earnings per share (Calculation of Basic and Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share Note [Line Items]	'	'	'	'
Net income	$41,061,566	$25,272,649	$76,319,034	$68,607,784
Less: Dividends to redeemable Series C convertible preferred stockholders	'	-30	'	-90
Net income available to common stockholders	41,061,566	25,272,619	76,319,034	68,607,694
Net income for basic and dilutive earnings per share	30,400,185	18,806,417	56,734,868	51,185,278
Denominator for basic and diluted earnings per share	47,835,729	47,559,750	47,774,447	47,544,408
Basic and diluted	$0.64	$0.40	$1.19	$1.08
Convertible Preferred Stock Series C [Member]	'	'	'	'
Earnings Per Share Note [Line Items]	'	'	'	'
Less: earnings allocated to participating	'	-172	'	-468
Convertible Preferred Stock Series D [Member]	'	'	'	'
Earnings Per Share Note [Line Items]	'	'	'	'
Less: earnings allocated to participating	-10,168,194	-6,326,835	-19,000,909	-17,225,253
Nonvested Shares [Member]	'	'	'	'
Earnings Per Share Note [Line Items]	'	'	'	'
Less: earnings allocated to participating	($493,187)	($139,195)	($583,257)	($196,695)

Earnings_per_share_Summary_of_

Earnings per share (Summary of Potentially Dilutive Securities) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Convertible Preferred Stock Series D [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Shares issuable upon exercise	16,000,000	16,000,000	16,000,000	16,000,000
Series A Investors Warrants [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Shares issuable upon exercise	1,320,696	1,320,696	1,320,696	1,320,696
Series A Placement Agents Warrants [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Shares issuable upon exercise	117,261	117,261	117,261	117,261
Series C Placement Agents Warrants [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Shares issuable upon exercise	'	166,667	'	166,667
Stock Options [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Shares issuable upon exercise	'	148,500	'	148,500

Commitments_and_contingencies_1

Commitments and contingencies (Narrative) (Details)	9 Months Ended				0 Months Ended				9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Mar. 08, 2013	Mar. 08, 2013	Mar. 08, 2013	Mar. 08, 2013	Sep. 30, 2013	Sep. 30, 2013
	Land Use Right, Plant, and Building [Member]	Land Use Right, Plant, and Building [Member]	Total Consideration for Plant [Member]	Total Consideration for Plant [Member]	Property, Plant and Equipment [Member]	Property, Plant and Equipment [Member]	Working Capital [Member]	Working Capital [Member]	Equipment [Member]	Equipment [Member]
	USD ($)	CNY	USD ($)	CNY	USD ($)	CNY	USD ($)	CNY	USD ($)	CNY
Long-term Purchase Commitment [Line Items]	'	'	'	'	'	'	'	'	'	'
Commitments	$33,900,000	207,400,000	$76,900,000	470,000,000	$295,000,000	1,800,000,000	$98,000,000	600,000,000	$805,000	4,926,600

Commitments_and_contingencies_2

Commitments and contingencies (Schedule of Future Minimum Rental Payments) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Commitments and contingencies [Abstract]	'	'	'	'
Period from October 1, 2013 to December 31, 2013	$369,223	'	$369,223	'
Year ending December 31, 2014	1,436,327	'	1,436,327	'
2015	751,958	'	751,958	'
2016	247,013	'	247,013	'
2017	61,114	'	61,114	'
2018 and thereafter	'	'	'	'
Operating lease rental expense, plant, equipment and office spaces	$336,584	$214,243	$734,854	$511,738